CVE-2026-53063

In the Linux kernel, the following vulnerability has been resolved: dm cache: fix write hang in passthrough mode The invalidate_remove() function has incomplete logic for handling write hit bios after cache invalidation. It sets up the remapping for the overwrite_bio but then drops it immediately without submission, causing write operations to hang. Fix by adding a new invalidate_committed() continuation that submits the remapped writes to the cache origin after metadata commit completes, while using the overwrite_endio hook to ensure proper completion sequencing. This maintains existing coherency. Also improve error handling in invalidate_complete() to preserve the original error status instead of using bio_io_error() unconditionally.

• https://git.kernel.org/stable/c/05798d091ebcfb6d68228890e593f209e8ac940dPatch
• https://git.kernel.org/stable/c/4ca8b8bd952df7c3ccdc68af9bd3419d0839a04bPatch
• https://git.kernel.org/stable/c/64d6519b00be4116d365bd31f33a5e5ce2944c1aPatch
• https://git.kernel.org/stable/c/9fa18d0b981776b190ca4632942a7c2174052b78Patch
• https://git.kernel.org/stable/c/b8ace9e96983abb20ccf39edce8a60f1bb0b83d8Patch
• https://git.kernel.org/stable/c/ecb10c193cbebf5e6984246a9b4ff1f95d45ed87Patch

Published

Jun 24, 2026

Last Modified

Jul 21, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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